(1):

(n.) A kind of large drinking cup, - used by Greeks and Romans, esp. by poor folk.

(2):

(n.) The cup of a narcissus, or a similar appendage to the corolla in other flowers.

(3):

(n.) A cup-shaped stem or podetium in lichens. Also called scypha. See Illust. of Cladonia pyxidata, under Lichen.